توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

[Documents on the rejection of the proposed 1972 Constitution in the plebiscite on January 15, 1973] [microform]. University of the Philippines Library.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

[Documents on the Rejection of the Proposed 1972 Constitution in the Plebiscite on January 15, 1973] [microform]. Quezon City: University of the Philippines Library.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

[Documents on the Rejection of the Proposed 1972 Constitution in the Plebiscite on January 15, 1973] [microform]. University of the Philippines Library.